The JCB 32000801 is a genuine OEM core plug, also known as a freeze plug or Welch plug, featuring a 25mm diameter. This essential component is designed to seal casting holes in engine blocks or cylinder heads, protecting the engine from potential damage due to freezing coolant expansion or serving as a manufacturing access point. Manufactured to JCB's stringent quality standards, this core plug ensures a precise fit and reliable, long-lasting performance in compatible JCB equipment.